Method and apparatus for making cable beads



Nov. 11, 1930. v H. R. TEEGARDEN 1,781,650

METHOD AND APPARATUS FOR MAKING CABLE BEADS Filed April 26, 1928 Patented Nov. 11, 1930 gonna 'rnnsnnnnlv, F

Annomoino, Assrsirort 'rorrrrn GOODYEAR'ifIRE &RUBBER i fooiurnnjccor ,AKRor o Io, A-ooR'PonA'rIoN or OHIO fim n'rfion AND APPARATUS For. MAKING CABLE EAps Application filed April 26,

vide a bead ring composed of a plurality of.

wire strands which are equally stretched and i secured, substantially, against relative, movemonth i Another object of the invention is to provide a cable bead ringcomposed of a plurality' of wire' strands having interstices therebetween for accommodating rubber or other binding material within the several strands of the cable.

'Another object ofthe invention is to pro.- vide a; relatively economical and efficient method of and apparatus for constructing bead rings of the above designated character.

The invention comprises a bead ring whioh is constructed by winding'a strand of wire or other suitable? tension element, spirally, upon the outer surface of abead forming reel. When a predetermined number of strands of wire are wound uponv the reel, its

rotation is discontinued and the-strands are secured rigidly together by ;,a screw-clamp,

which is'projected partially below the sur- :7" face of the reel within a recess formed therein. Then the supply strand is severed at a point remote from the leading end thereof in order to provide asubstantially greater length of wire adjacent the two end portions than i is required for spanning the reel. Thereafter, the cable is removed from the reel and the free portions of the wire are Wound helically around the cable in opposite directions beginning at thepointat which the I clamp is secured, When theend portions of the wire'meet at theside of the cable opposite the clamp, they are spliced-together and, wound around the remaining strands of the cable in any "suitable manner. The cable may Another object of the inventionisto pro respectto the latter. and

be oonstructed by employing asingle strand 192s, SerialNo. 272,922

of Wire as a supply imit or impair of strands may be twisted together and the, bead par tiallylor entirely constructedby employing suclraunitas asupply strand, V

For. a better understanding of the invention, reference may now be had to the accompanying drawing forming a part of this specification, in which; V I e 4F 1g. 1 1s a 'sidenelevat onal view of an a "paratus for constructing wire cable 'bea s, illustrating one embodiment oftithe inven- Fig.- 2Iis a cross-sectional view of the apparatus illustrated in Fig. 1, taken substantially on line IIVII ofFig; 1'; -Fig; 3 ;is a fragmentary cross-sectional view on ailarge'rjscale, throughfa'p'ortion of the "bead forming ring illustratedwin Fig. 1

and taken substantially; on ,line TIL-III thereof; I

Figwl is an elevational view of a cable beadlring embodyingone form which the invent-ion may assume and 7 g I ,Fig. 5 is an enlarged fragmentary View 0 supply strand composed of a pair of twisted Wireswhich may be employed in constructin beads for, pneumatic tire casings.

Anapparatus illustrating one embodiment of the invention comprises a pedestal 10, se-

cured to the floor of a building by bolts 11,

having a bearing, portion 12 formed adjacent theupper end'thereof. ;The bearing .12 is composed, of an arcuate portion l3 formed 7 integrally with an upper portion of the pedestal=10 and a cap l ljclisposed oppositely with secured thereto by means of bolts q p v j A short shaft 16, journaled in the;bea'rin'g '12,iisjprovided-,With a thrust ring 17, I rigidly secured at one end thereof to prevent its, displacementjin one direction within the bearing. Onthe opposite end of the shaft '16, a b ad forming reel; 18; is] secured rigidly, in abutting relationfto :the 7 adj acent' end of the bearing lg A; detent 19, mounted on an upper portion of the bearing cap 14, is adaptl e'd operatively to engage aradially disposed opening -21which is formed intermediateythe 'en snf the sha t 1 :Theouter :n ii h ry of iheii e llc fi vi 0 1 1 Qse efe y -ir risa at 26, anda block 27 is slidably disposed in a radial opening formed at an intermediate portion of the surface 26. .The inner end of the block 27 is supported by atapering pin 28 which, in turn, is slidably disposed inan opening formed in the reel 18 intersecting the' 'low'er portion of the opening in which the block 27 is mounted, A handle 29, projecting frornthe reel 18, provides means tor rotating thelatter when the detent 19 is dis- 1 engaged with respect tothe-opening2luwithin the shaft 16.:

A supply reel '31 is provided withoppositely disposed trunnions 32, whichare journa'led in U-shape bearings 33 formed -adjacent the upper ends 'ofsupporting frame members 34. A brakebeam 36, an intermediate portion of which is adapted frictionally to engage'one'of the trunnions 32, is pivoted atone end'upona pin 37 secured in a bracket 38 that is bolted asindicated at 39 toone of the frame members 34. An opposite end portion of the 'beam '36is connected by a spring llfto a pin 42 which is mounted between a pair, of lugs 43 projecting laterally i'rom one side of the frame n1embert34.; 7

1 A screw-clamp 4 employed in conjunction with'theoperation of the apparatus, is

composed of a clampingeye 46 withinwhich a set screw 47 is threaded. The'set screw i7 is adapted to close an opening 48 communieating with the interior of the clamping eye 4:6 when projected within the latter. In the operation of the apparatus, an end 4901 a wire supply strand or bead building unit 51 is secured in an opening 52 formed in thesurface 22 ofthe reel 18- at a'poin't a substantial distance beyond the block 27. The

detent 19 is withdrawn from the opening 21 direction by manipulation of the handle 29.

wire 51 are positioned around the surface 22 of the reel 18 adjacent the flange 23, the

reel again is secured rigidly against rotation 1 b operative engagement of the fdetent 19 within the opening 21. All of the strands of the cable 53 thus formed are secured rigidly together by insertingthe'cla'rnp 44 partially within the recess 24: and tightening the set screw47 upon the strands after they are surrounded by the eye 46. 7 j

' The supply strand is severed, by any suitable cuttin device (not shown), at a point 54 a substantialjdistance from the block 27, thusforming a'see'ond end portion 56 of the from unequally 'tensioned strands.

wire 51 composing the cable 53. After rcmoving the end d9 of the wire 51 from the opening 52, the tapered pin 28 is removed from beneath the block 27, thus permitting the latter to move inwardly with respect to the surface 26; Then the cable53 is removed manually from the reel 18 and beginning at points adjacent the clamp 44:, the opposite end portions/19 and 56 of the wire 51 are wound helically in opposite directions about semi-circular portions of the cable. Thereafter the ends 49 and 56 are twisted together in any suitable manner an dwound in closely disposed convolutions about an adjacent portion of the cable thus forming a relatively non-yielding splice. Any surplus wire is out 'fronithe ends 49 and 56 and the clamp 44 is disengaged from the cable.

The bead cable thus formed may be applied in'buildin neumatic tire casin s directly according to certain known methods of constructing them or it first may be e11- -'cased in arubber or rubberized fabric jacket, or both; beio're bemg employedfin theconstruction of such articles of manufacture.

As best shown by Fig-5, a preferred form of the invention contemplates the employment of a wire strand or bead building unit 51, composed of a pair of wires 57, which are twisted together before the bead building unit is wound upon the reel 31. A bead ring may be constructed of this bead building unit as hereinbefore described or other desirable manner;

From the foregoingdescription, it is apparent thatthe invention embraces-a very in an}' economical and eiiicient method of and apparatus for constructing wire cable beads that differ fundamentally from the beads here- A pneumatic tire casing embodying beads constructed according to the principles of this invention obviously tofore employed.

will not be subject to bead failures resulting I g It is also aparent that a bead constructed by employing-a bead building unit composed oi twisted strands of :wire will be easily impregnated during a molding process by the and-the reel-isrotated in an anti-clockwise rubber of which thepneumatic tire casing is partially composed. \Vhen the required number of strands of the Althoughl have illustrated but the preferred forms which the invention may same and have described those forms in detail, it will be apparent to those skilled in the art that the invention is not so limited but that various modifications may be made therein without departing from the spirit of the invention or from the scope o-lthe appended claims.

What I laim ist 1. A method of constructing tire beads which comprises spirally winding a portion of a tensionmember to form an endless cable and helically winding the cable with a remaining portion of the tension member.

rrsneao 2. A method of constructing tire beads which comprises spirally winding a portion of a tension member upon a cylindrical surface to form an endless cable, securing the f strands of the tension member composing thecable rigidly with respect to each other,

and helically winding a remaining port-ion of the tension member around a portion of the cable. 3. A method of constructingtire beads which comprises twisting a pair of tension members together to form a bead building unit and then forming a bead cable from the unit.

which comprises twisting a pair of tension I members together to form a bead building unit, forming the unit into an endless cable and wrapping the cable helically'with portion of the unit. V

5. A head building apparatus comprising a reel for receiving bead wire from a supply reel mounted adjacent thereto and means independent of the first mentioned reel for securing strands of a. cable, constructed thereupon, rigidly together. 7 g 1 p 6. A bead building apparatus comprising a drum having an opening within the outer I periphery thereof, means for forming a cable composed of a plurality of wire strands upon the drum, and means independently I associated with the opening for securing the strands of the cable rigidly together.

7. A bead building machine comprising a reel for supporting-an endless bead cable thereupon, a block projecting above the surface of the reel against the cable, and means HOMER R. TEEGARDEN.

4:. A'method of constructing tire beads I 

